N.H. Code Admin. R. Mec 305.01
Eligibility Requirements for Initial Individual Plumbing Licensure
Effective Feb 13, 2026#10648, EMERGENCY RULE, eff 7-25-14, EXPIRES: 1-21-15; ss by #10761, INTERIM, eff 1-21-15, EXPIRES: 7-20-15; ss by #10847, eff 7-1-15; ss by #13770, eff 12-10-23 (formerly Saf-Mec 305.01); ss by #14189, INTERIM, eff 2-12-25; ss by #14482, eff 2-13-26, EXPIRES: 2-13-36Mechanical Licensing Board
(a) A person shall be eligible for initial licensure as a master plumber if they:
(1) Are of good character and professional competence, as evidenced by:
- a. The information supplied on the application form;
- b. Any information submitted pursuant to Mec 304.04(b); and
- c. Being a journeyman plumber without a history of consumer complaints resulting in any disciplinary sanctions by the board within the past year;
- (2) Have held a New Hampshire journeyman plumber license for at least 6 months;
(3) Can demonstrate proof of successful completion by examination to become licensed as a master plumber, which shall consist of multiple choice questions on the following topics:
- a. Plumbing systems drainage;
- b. Basic and advanced plumbing theory;
- c. Reading and interpretation of plumbing plans and drawings;
- d. Plumbing systems venting;
- e. Installation and protection of the potable water supply;
- f. Proper material selection;
- g. Backflow installation and protective devices;
- h. Commercial kitchen design, installation, and maintenance;
- i. System sizing and fixture calculations;
- j. Accessibility and handicapped requirements;
- k. Plumbing system testing, inspection, and disinfecting;
- l. Adopted plumbing codes and standards, along with their amendments;
- m. Plumbing code administration as set forth in chapter one of the state plumbing code, including but not limited to, required permits and inspections; and
- n. New Hampshire statutory and regulatory law governing plumbing; and
- (4) Have passed the master plumber examination by answering at least 75% of the questions correctly.
(b) A person shall be eligible for initial licensure as a journeyman plumber if they meet the conditions of either (b)(1)-(3) or (4) below:
(1) Are of good character and professional competence as evidenced by:
- a. The information supplied on the application form;
- b. Any information submitted pursuant to Mec 304.04(a); and
- c. Have received an apprenticeship completion certificate issued by the United States Department of Labor, or by the sponsoring plumber who sponsored the apprenticeship;
(2) Have provided proof of successful completion of a minimum of 600 hours of educational training which covered the following subject matter:
- a. Plumbing systems drainage;
- b. Basic and advanced plumbing theory;
- c. Reading and interpretation of plumbing plans and drawings;
- d. Plumbing systems venting;
- e. Installation and protection of the potable water supply;
- f. Proper material selection;
- g. Backflow installation and protective devices;
- h. Commercial kitchen design, installation, and maintenance;
- i. System sizing and fixture calculations;
- j. Accessibility and handicapped requirements;
- k. Plumbing system testing, inspection, and disinfecting;
- l. Adopted plumbing codes and standards, along with their amendments;
- m. Plumbing code administration as set forth in chapter one of the state plumbing code, including but not limited to, required permits and inspections; and
- n. New Hampshire statutory and regulatory law governing plumbing;
- (3) Have provided proof of completion of a minimum of 8,000 working hours of on-the-job experience in the trade relevant to plumbing as described in RSA 153:27, XIV; or
(4) Have completed all of the following:
- a. Demonstrated proof of previous licensure as a journeyman plumber in any other state or jurisdiction responsible for the licensure of plumbers;
- b. Taken the examination to become licensed as a journeyman plumber, which shall consist of multiple choice questions on, but not limited to, the topics listed in Mec 305.01(a)(3) above; and
- c. Passed the journeyman plumber examination by answering at least 70% of the questions correctly.
Source. #10648, EMERGENCY RULE, eff 7-25-14, EXPIRES: 1-21-15; ss by #10761, INTERIM, eff 1-21-15, EXPIRES: 7-20-15; ss by #10847, eff 7-1-15; ss by #13770, eff 12-10-23 (formerly Saf-Mec 305.01); ss by #14189, INTERIM, eff 2-12-25; ss by #14482, eff 2-13-26, EXPIRES: 2-13-36